DE 444150 C — Hans Deser
| 4 ELEMENTS / 3 GROUPS |
| 100 mm f/4.5 PATENT NOMINAL |
| FIXED INFINITY MODEL |
| SPHERICAL / PLANAR |
NO_INTERNAL_RECONSTRUCTION: static infinity model; no focus travel or finite conjugate is authored. closeFocusM=1e15 is the established finite schema sentinel, not a production minimum focus distance.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | Unmatched (vintage crown; native sodium D coordinates) |
| L2 | Plano-Concave | Unmatched (vintage flint; native sodium D coordinates) |
| L3 | Biconcave Negative | Unmatched (vintage light flint; native sodium D coordinates) |
| L4 | Biconvex Positive | Unmatched (vintage flint; native sodium D coordinates) |